Transcend's high-performance microSDXC 330S memory card provides increased performance and capacity required for the best experience on your smartphone, tablet or other device. In addition to incredible transfer speeds, the card meets UHS Video Speed ​​Class 30 (V30) standard, enabling smooth and uninterrupted 4K video recording. - Supports Ultra High Speed ​​Class 3 specification (U3) and Video Speed ​​Class 30 (V30) - App Performance Class 2 (A2) - Transfer speed: Up to 100MB/s read speed, Up to 85MB/s write speed* - Meets the JIS IPX7 standard (Can withstand being 1m under water for up to 30 minutes) - incl. adapter to be used as an SDXC card * Note! Speed ​​may vary depending on host hardware, software and usage.